Sathyan's comment was completely correct (thanks Sathyan for mentioning
that). As a FOSS project, GlassFish is usable for production in any
configuration that you want, including a trimmed down distribution.
However, if you want a support contract from Oracle that provides help
with resolving issues, bug fixes, etc., the issue will need to be
reproduced on a supported (non-trimmed) configuration. I should have
clarified this in my original post.
Tom